Calculates, displays and automatically updates times and dates in different timezones with respect to daylight saving.

Noted That:

To install correctly this timezonecalculator.zip.
Fisrt Download the timezonecalculator.zip to your computer
Extract/Open timezonecalculator.zip to Your Computer.
Then, Find readme.txt file inside timezonecalculator.zip and Open readme.txt.
Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
Then, Follow the the Tips Below.

Start the Tips:

1. First Download "timezonecalculator.zip" Plugin to your Local Computer. (Click Download)

2. Then, Login to your "yourdomain.com/wp-admin" Dashboard.

3. Then, Click on "Plugins" + "Add New" from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse "timezonecalculator.zip" Downloaded plugin from your computer, Where you downloaded timezonecalculator.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

7. Then, See left sidemenu. "TimeZoneCalculator" folder is added on left sidemenu. Now, Click on "TimeZoneCalculator" folder.

Noted that: If you do not see "TimeZoneCalculator" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about TimeZoneCalculator Configurtions and Settings or How to work "TimeZoneCalculator" in your WordPress site.

After Activated Plugin According to Step-6 then,

Go to "Plugins" + "Installed Plugin" from Wordpress Admin Panel Leftside Menu.
or Direct go to: https://yourdomain/wp-admin/plugins.php
Then, Find "TimeZoneCalculator" Activated Plugin from Plugin List.
Then, Click on "Settings" from Plugin that is TimeZoneCalculator
Now, Edit/Add/Config the setting and Click on "Save Changes" button,

Guide

Guide
Copy the `timezonecalculator` directory into your WordPress Plugins directory (usually wp-content/plugins). Hint: You can also conduct this step within your Admin Menu. In the WordPress Admin Menu go to the Plugins tab and activate the TimeZoneCalculator plugin. Navigate to the Settings/TimeZoneCalculator tab and customize the timezones according to your desires. If you have widget functionality just drag and drop TimeZoneCalculator on your widget area in the Appearance Menu. Add additional function and shortcode calls according to your desires. Be happy and celebrate! (and maybe you want to add a link to https://www.bernhard-riedl.com/projects/)

Copy the timezonecalculator directory into your WordPress Plugins directory (usually wp-content/plugins). Hint: You can also conduct this step within your Admin Menu.
In the WordPress Admin Menu go to the Plugins tab and activate the TimeZoneCalculator plugin.
Navigate to the Settings/TimeZoneCalculator tab and customize the timezones according to your desires.
If you have widget functionality just drag and drop TimeZoneCalculator on your widget area in the Appearance Menu. Add additional function and shortcode calls according to your desires.
Be happy and celebrate! (and maybe you want to add a link to https://www.bernhard-riedl.com/projects/)

timezones, respect, daylight, saving, different, dates, displays, automatically, updates, times,

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Reffered: https://wordpress.org/